Cal cylindric or prismatic, generally circumscissile near the base, leaving a flaring collar under the fr; cor elongate-funnelform, very large, the lobes well developed or represented by slender projections; anthers longitudinally dehiscent, much shorter than the filaments; fr a 2-carpellate, 4-locellar, mostly spiny capsule, generally opening by 4 apical valves; seeds numerous, flattened, with curved embryo; narcotic, poisonous herbs or woody plants with large, entire to toothed or lobed lvs; fls terminal and solitary in origin, later appearing to be borne in the forks of the branches. 25, neotrop. and warm-temp., now widely intr.